Short-term open-pit production scheduling optimizing multiple objectives accounting for shovel allocation in stockpiles

2022 ◽  
Author(s):  
Fabián Manríquez ◽  
Héctor González ◽  
Nelson Morales
Keyword(s):  
Production Scheduling ◽  
Multiple Objectives ◽  
Open Pit ◽  
Short Term

scholarly journals Joint stochastic short-term production scheduling and fleet management optimization for mining complexes

2020 ◽  
Vol 21 (4) ◽  
pp. 1717-1743
Author(s):  
Christian Both ◽  
Roussos Dimitrakopoulos
Keyword(s):  
Stochastic Optimization ◽  
Production Scheduling ◽  
Planning Horizon ◽  
Open Pit ◽  
Open Pit Mining ◽  
Fleet Management ◽  
Production Schedule ◽  
Short Term ◽  
Term Extraction ◽  
Management Optimization

Abstract This article presents a novel stochastic optimization model that simultaneously optimizes the short-term extraction sequence, shovel relocation, scheduling of a heterogeneous hauling fleet, and downstream allocation of extracted materials in open-pit mining complexes. The proposed stochastic optimization formulation considers geological uncertainty in addition to uncertainty related to equipment performances and truck cycle times. The method is applied at a real-world mining complex, stressing the benefits of optimizing the short-term production schedule and fleet management simultaneously. Compared to a conventional two-step approach, where the production schedule is optimized first before optimizing the allocation of the mining fleet, the costs generated by shovel movements are reduced by 56% and lost production due to shovel relocation is cut by 54%. Furthermore, the required number of trucks shows a more balanced profile, reducing total truck operational costs by 3.1% over an annual planning horizon, as well as the required haulage capacity in the most haulage-intense periods by 25%. A metaheuristic solution method is utilized to solve the large optimization problem in a reasonable timespan.

scholarly journals Short-term scheduling of an open-pit mine with multiple objectives

2016 ◽  
Vol 49 (5) ◽  
pp. 777-795 ◽  
Author(s):  
Michelle Blom ◽  
Adrian R. Pearce ◽  
Peter J. Stuckey
Keyword(s):  
Multiple Objectives ◽  
Open Pit Mine ◽  
Open Pit ◽  
Short Term

scholarly journals Algorithm Development of Production Scheduling for Open Pit Operations Using 4-D Network Relaxation

2011 ◽  
Vol 127 (10_11) ◽  
pp. 615-621
Author(s):  
Yuzo TAMANISHI ◽  
Shinsuke MURAKAMI ◽  
Jiro YAMATOMI
Keyword(s):  
Production Scheduling ◽  
Open Pit ◽  
Algorithm Development

Comparative analysis of three metaheuristics for short-term open pit block sequencing

2016 ◽  
Vol 22 (3) ◽  
pp. 301-329 ◽  
Author(s):  
Amin Mousavi ◽  
Erhan Kozan ◽  
Shi Qiang Liu
Keyword(s):  
Comparative Analysis ◽  
Open Pit ◽  
Short Term
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